Proporta TurboCharger Pocket Power

Delivering emergency juice to a smartphone, MP3 player, tablet or any device that you can’t bear to be away from, the credit-card sized TurboCharger packs a 680 mAH battery and hooks up to your tech via Micro USB or an iPod/iPhone connector. At just 7mm thick it’s slender enough to fit inside your wallet.

Price: £12.95